ANTI-LOCK BRAKE SYSTEM ABS Warning Light does not Come ON

DESCRIPTION

The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication.

WIRING DIAGRAM

Refer to ABS Warning Light Remains ON Click here.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

   
   

   1. Check if CAN communication system DTCs are output Click here.

      Result
      Result Proceed to DTC is not output A DTC is output B

   
   

   B

   GO TO CAN COMMUNICATION SYSTEM Click here

   A

2. PERFORM ACTIVE TEST USING GTS (ABS WARNING LIGHT)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch off.

   3. Turn the GTS on.

   4. Enter the following menus: Chassis / ABS/VSC/TRC / Active Test.

   5. According to the display on the GTS, perform the Active Test.

      ABS/VSC/TRC

      Tester Display	Test Part	Control Range	Diagnostic Note
      ABS Warning Light	ABS warning light	Warning light OFF/ON	Observe combination meter assembly Vehicle condition: Vehicle stopped

   6. When performing the ABS Warning Light Active Test, check ABS Warning Light in the Data List.

      ABS/VSC/TRC

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      ABS Warning Light	ABS warning light / ON or OFF	ON: Warning light on OFF: Warning light off	-

      Result
      Result Proceed to ABS warning light in the Data List turns ON/OFF using the Active Test A ABS warning light in the Data List does not change using the Active Test B

   
   

   B

   REPLACE BRAKE ACTUATOR ASSEMBLY Click here

   A

3. INSPECT COMBINATION METER ASSEMBLY

   
   

   1. Turn the ignition switch off.

   2. Perform Active Test of the combination meter assembly using the GTS Click here.

   3. Check the combination meter assembly.

      OK
      The ABS warning light turns on or off in accordance with the GTS.

   
   

   NG

   INSPECT METER / GAUGE SYSTEM Click here

   OK

   REPLACE BRAKE ACTUATOR ASSEMBLY Click here